Embracing the Aftermath

She spoke before Merlin could ask if she was alright. "Then I am happy." she said, her tone not betraying her.

Merlin was a little surprised. "Gwen?"

Gwen looked back at him and smiled warmly. "I am happy he died with someone that he knew loved him."

OR

Merlin returns to Camelot just over a year after Arthur's death. He learns of the changes since he left, and realises that Gwen knew more about him than she ever let on.